Ship construction.



J. T. L'ANGLOIS. SHIP CONSTRUCTION.

APPLICATION rum) we. 16, 1912.

Patented Jan. 21, 1913.

'l'rlrrrrl'fr rr rr 'r rrrr rrrlrrrrrrrrrrr rrrrrrrrr] Witnesses Attorneys JOSEPH r. LANGLOIS, oEnENo, ivEvAnA, a ssrsliion or RENO, NEVADA.

its; woma BRIGGS;

SHIP CONSTRUCTION.

Specification of Letters Patent.

Patented Jan. 21, 1913.

Application filed August 16, 1912. Serial No. 715,466.

To all whom it may concern:

Be it known that I, JOSEPH T. LANeLoIs, a citizen of the United States, residing at Reno, in the county of Washoe and State of Nevada, have invented a new and useful Ship Construction, of which the following is a specification.

This invention relates to improvements in ship constructions.

The primary object of the invention is to provide a ship which, in the event that the hull becomes damaged, certain portions of the ship will float, as independent structures.

A further object of the invention is to provide means for retaining the floating structures in contact with the hull, said means being movable with respect to the hull to allow the floating structures to be moved with respect to the same, the mem-' bers being provided with rollers and serving to assist in the launching of the floating structure.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts andin the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the-invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

Tnthe drawings :-Figure l is a side elevation of a ship. Fig. 2 is a top plan view. Fig. 3 is a transverse section. Fig. 4 is a detail view of the means which normally retains the floating structure in contact with the ship, and, when actuated, assists in the locking of the structure.

In the drawings, 10 designates the hull, which is formed on either side with concavities 11 which are of such a curvature as to conform to one side of a boat 12. The boats 12 are received by the concaved portion of the ship, the same while being independent vessels, being utilized as part of the ship while secured to the same. The boats 12 on their sides remote from the hull are supported by longitudinally disposed beams 1a which are provided with rollers 15 and at points adjacent their ends with the enlarged portions 16 which are provided with rollers 17. A. plurality of rack bars 18 are secured to each of the beams 14, the. said bars extending below the boat. A plurality of pinions 18 mesh with said rack bars, said pinions being mounted upon a shaft 19 is rotated by any suitable mechanism when it is desired to launch the boat.

When the hull of the vessel becomes damaged or it is desired to leave the hull, should the vessel ground, the shaft 19 is rotated, to move the beams 14 away from the hull. The rear rack bar is flat while the front rack bar is curved so that when the shaft 19 is rotated the rear of the boat is swung away from the hull and lowered with respect thereto. The front end of the boat remains behind the overlapping end 30 of the hull of the boat, which action will provide for and insure that the boat will be launched rear- Wardly, being assisted in its launching by means of the rollers 15 and 17. The overlappingend 31 of the hull is hinged at 32 to allow the rear end of the boat to be swung outwardly. The deck 21 of the boat 12 is secured along its upper edge to the deck 24 which is permanently secured to the hull, the fastening device which holds the boat to the main deck being released before the shaft 19 is rotated.-

The'many advantages of a construction of this character will be clearly apparent as it will be noted that should the hull become damaged the'boats 12 may be readily detached from the hull and float as independent structures.

It will be noted that the construction is such as may be easily and economically manufactured and that the launching of the boat may be readily accomplished. The boats 12 are provided with power, the propellers 26 of said boat, belng housed by members 27 which are pivotally connected to the main deckat one end of the concavities which receive the boats.

What is claimed is In a ship construction, a hull, the sides of which are concaved to conform to the curvature of the sides of a boat, boats ar-.

ranged on each side of said hull, beams supporting said boats on their sides remote from the hull, rack bars connected to said In testimony that I claim the foregoing beam, shafts disposed longitudinally of said as my own, 1 have hereto aflixed my signaboats, pinions arranged on said shafts and ture in the presence of two witnesses. meshing with said rack bars, said shafts JOSEPH T. LANGLOIS.

' when rotated, moving said beams with re- Witnesses:

spect to said hull, said beams being pro- A. A. SHEA, vided with rollers. I G110. S. GREEN. 

